The effect of temperature of equal- chanel angular pressing process on mechanical properties and biocompatibility of titanium dental implant

Subject Areas :

محمد خدائی ¹ , Payam Eslamian ² , mahmood meratian ³ , Mahdi Hadavi ⁴

1 - هیات علمی دانشگاه آزاد اسلامی- واحد شهر مجلسی
2 - فارغ التحصیل
3 - هیات علمی
4 - هیات علمی

Received: 2018-02-20 Accepted : 2019-08-06 Published : 2019-10-23

Keywords: Titanium, Dental implant, Biocompatibility, Sever plastic deformation,

Abstract :

Biometals such as stainless steels, tantalum, titanium, cobalt and their alloys are widely used for medical implants for bone and dental healing. Researches indicates that metals such as cobalt, chromium, nickel, aluminum and vanadium, release ion in vivo, which make the human body sensitive to the allergy and so implant lessening. The biocompatibility and non-toxic ion release of titanium is suitable for human body implantation, but it is needed to improve its strength. Nano-structured pure titanium is a newly developed method to increase the strength of implants, and increase their efficiency. In this research some parameters of Equal Chanel Angular Pressing (ECAP) like number of passes and temperature were investigated. After ECAP processing on pure titanium, the mechanical, metallurgical and biological properties of the products were investigated using standard tests. Results indicated that using ECAP process and reducing the titanium grain size from 14 micron to 440 nanometer, its mechanical and biological properties improved. Results of biocompatibility measurement indicated that the processing temperature of 240 ◦C make a very good biocompatibility with Adipose-derived stem cells (ASCs). Also the biocompatibility of titanium increased by increasing the number of the ECAP passes. The processed titanium at 240 ◦C for 4 passes, could be introduced as the choice during the other candidates.

References:

 [1]     E. Collings, “The physical metallurgy of titanium alloysˮ, American Society for Metals, pp. 261, 1984.

 

[2]       ش. اکبری نیا، س. ع. حسینی، س. خ. صدر نژاد، "ساخت ایمپلنت حافظه دار متخلخل دندان از جنس آلیاژ NiTi به روش متالورژی پودر"، فصلنامه علمی پژوهشی فرآیندهای نوین در مهندسی مواد، سال هشتم، شماره دوم، صفحه 29-40، 1393.

 

[3]     M. Rafienia & Sh, Bonakdar, “Biomaterials: Principles and Applicationsˮ, Tehran: Amir Kabir university of Technology pblication, pp. 1-30, 2007.

 

[4]     M. H. Fathi & V. S. Mortazavi, “Properties and Medical Applications of Metallic Biomaterialsˮ, Isfahan: Arkan Danesh publication, pp. 1-25, 2003.

 

[5]     M. Khodaei, M. Meratian, O. Savabi & M. H. Fathi, “The Effect of Sintering Temperature on properties of Prous Titanium Scaffolds Fabricated Using Space HolderMethod for Hard Tissue Reconstructionˮ, Journal of Advanced Processes in Materials, Vol. 3, pp. 1-9, 2015.

 

[6]     M. Khodaei, A. Valanezhad, I. Watanabe & R. Yousefi, “Surface and mechanical properties of modified porous titanium scaffoldˮ, Surface and Coatings Technology, Vol. 315, pp. 61-66, 2017.

 

[7]     V. V. Stolyarov, et al., “Influence of ECAP routes on the microstructure and properties of pure Tiˮ, Materials Science and Engineering: A, Vol. 299, No. 1, pp. 59-6 2001.

 

[8]     X. Zhao, et al., “The processing of pure titanium through multiple passes of ECAP at room temperatureˮ, Materials Science and Engineering: A, Vol. 527, No. 23, pp. 6335-6339, 2010.

 

[9]     C. Yao, et al., “Improved bone cell adhesion on ultrafine grained titanium and Ti-6Al-4V, Ceramic Nanomaterials and Nanotechnology III: Proceedings of the 106th annual Meeting of The American Ceramic Societyˮ, Indianapolis, Indiana, USA 20, Ceramic Transactions, John Wiley & Sons, 2012.

 

[10] R. Z. Valiev, et al., “Nanostructured titanium for biomedical applicationsˮ, Advanced engineering materials, Vol. 10B, No. 8, pp. 15-17, 2008.